LOANS (Details 3)	Mar. 31, 2017 USD ($) loan	Dec. 31, 2016 USD ($) loan
Recorded investment in impaired loans and related allowances for credit losses
Number of loans in default | loan	0	0
Corporate loans, at estimated fair value
Recorded investment in impaired loans and related allowances for credit losses
Par amount of non-accrual loans	$ 138,600,000	$ 114,100,000
Estimated fair value of non-accrual loans	37,600,000	26,000,000
Ninety days past due, still on accrual	$ 0	$ 0